Table 1. Sociodemographic characteristics of stomach cancer survivors and general population before and after propensity score adjustment.
| Cancer survivors (N=408) n (%) | General population (N=994) n (%) | Wald Fa (P-value) | Wald Fa adjusted for propensity scoreb (P-value) | |
|---|---|---|---|---|
| Age | ||||
| ⩽49 | 140 (34.3) | 711 (71.5) | ||
| 50–64 | 194 (47.5) | 206 (20.7) | ||
| ⩾65 | 74 (18.2) | 77 (7.9) | 167.9 (<0.001) | 0.0001 (0.99) |
| Sex | ||||
| Male | 300 (73.5) | 497 (50.0) | ||
| Female | 108 (26.5) | 497 (50.0) | 65.2 (<0.001) | 0.23 (0.62) |
| Education | ||||
| Less than high school graduate | 171 (42.6) | 161 (16.2) | ||
| High school graduate or more | 230 (57.4) | 833 (83.8) | 110.1 (<0.001) | 0.07 (0.77) |
| Marital status | ||||
| Married | 352 (88.6) | 706 (71.0) | ||
| Widowed/divorced/separated/single | 45 (11.4) | 288 (29.0) | 48.4 (<0.001) | 1.88 (0.16) |
| Place of residence | ||||
| Metropolitan | 218 (46.4) | 426 (42.9) | ||
| City/country | 269 (53.6) | 568 (57.1) | 1.5 (0.22) | 0.7 (0.40) |
| Having a religion | ||||
| Yes | 281 (69.9) | 532 (53.5) | ||
| No | 121 (30.1) | 462 (46.5) | 31.5 (<0.001) | 0.23 (0.62) |
| Health cost financing | ||||
| Health insurance | 287 (71.9) | 959 (96.6) | ||
| Medical aid | 112 (28.1) | 34 (3.4) | 184.1 (<0.001) | 0.16 (0.68) |
| Monthly household income, $US | ||||
| <2000 | 143 (36.5) | 243 (24.5) | ||
| ⩾2000 | 249 (63.5) | 750 (75.5) | 20.1 (<0.001) | 0.11 (0.73) |
| No. of comorbidities | ||||
| 0 | 215 (52.7) | 738 (74.3) | ||
| 1 | 157 (38.5) | 206 (20.7) | ||
| ⩾2 | 38 (8.8) | 50 (5.0) | 61.7 (<0.001) | 0.003 (0.95) |
| No. of family members | ||||
| ⩽3 | 284 (70.3) | 751 (75.6) | ||
| ⩾4 | 116 (29.7) | 243 (24.4) | 4.0 (0.04) | 0.08 (0.76) |
| Current employment | ||||
| Self-employed | 140 (34.3) | 264 (26.6) | ||
| Employed | 78 (19.1) | 367 (36.9) | ||
| Full-time worker | 60 (76.9) | 301 (82.0) | ||
| Unemployed/retired | 99 (24.3) | 137 (13.8) | ||
| Homemaker | 91 (22.3) | 226 (22.7) | 37.4 (<0.001) | 0.68 (0.38) |
| Employment at the time of diagnosis | ||||
| Self-employed | 146 (35.8) | — | ||
| Employed | 123 (30.2) | — | ||
| Full-time worker | 58 (47.2) | |||
| Unemployed /retired | 66 (16.1) | — | ||
| Homemaker | 73 (17.9) | — | N/A | N/A |
Abbreviations: N/A=not applicable.
a
F statistics based on Wald χ2.
b
The propensity score summarizes the differences in observable characteristics between cancer survivors and general population, that is, age, sex, education, marital status, religion, monthly household income, health cost financing, number of family members, and number of comorbidities.